VMC Group SR Seismic Restraints are passive devices designed to restrain power generation equipment during a seismic event. Our snubber design incorporates thick elastomeric bearing surfaces designed to decelerate the seismic force input to the equipment while also restraining the equipment to the building structure. Designed to work in conjunction with either spring or elastomeric vibration isolators, the SR Series maintains 1 1/4" air gap in all directions between the steel housing and the elastomeric element in order to avoid short-circuiting of the isolator. The steel base and top plates incorporate two properly spaced and sized anchor bolt holes. The housing can also be welded to the power generation equipment and supporting structure if required. These snubbers provide a minimum of 1 g restraint capability in all directions.

Features & Benefits

  • Capable of restraining 1 g of force
  • Properly-sized and spaced bolt holes included for easy mounting
  • Snubber design decelerates seismic forces
  • Compatible with spring or elastomeric vibrators


  • Gensets
  • Electrical transformers
  • Switch gear equipment
  • Motors
  • Turbines




The engineers we employ hold the highest industry-recognized credentials in structural analysis, elastomer development and system dynamics.


We are the first ISO accredited PCA ISO-17065, third-party certification body for special seismic certification of non-structural building components and their mounting configurations by the ICC’s International Accreditation Service.

Test & Measurement

We are the only ISO 17025:2005 Accredited Seismic Simulation Test Laboratory with a triaxial shake table owned and operated by California licensed Structural engineers.

Testing Services Update
DCL now offers Nuclear Qualification and Testing services.

In partnership with Greenberry Industrial, we now offer testing services that meet the requirements of ASME NQA-1.

Call for more information.